This is a really fancy image animation that gives you a parallax effect on the image and ends up looking like a zoom in effect on a specific subject on an image. Great when you want to give your images a dollied and zoom effect where two layers moving closer and further from the camera. It was designed by Lokesh Dhakar.
If you are having trouble with the pen, try the archived copy on GitHub
Dollied and Zoom Effect Snippet
See the Pen Vertigo Effect by Lokesh Dhakar (@lokesh) on CodePen.0